Sifter, separator, and grader.



No. 824,650. PATE-NTED JUNE 26/1906.

E. HARTZBLL. SIFTER, SBPARATOR, AND GRADER.

APPLICATION FILED FEBJB. 1905.

3 SHEETS-SHEET 1.

lumni'oz .%1 ZE@ZI witnesses PATENTED JUNE 26, '1906.

E. HARTZELL. SIFTER, SEPARATOR, AND GRADER.

APPLICATION FILED 3513.18.1905.

3 SHEETSSHEET 2 N0. s24,650. PATENTED JUNE 26, 1906. E. HARTZELL.

SIFTER, SBPARATOR, AND GRADER. APPLICATION FILED PEB.1B. 1905.

3 SHEETS-SHEET 3.

. frame A, in which is pivotally suspended dihurrah sings enrich.

EDWIN HARTZELL, OF WILKES -BARRE, PENNSYLVANIA, hSSlGNOR OF ONEHALF TO JOHN P. BENNING, OF l/VILKES-BARRE, PENNSYLVANTA.

Specification of Letters Patent.

Patented June :26, 1906.

Application filed February 18, 1905. Eierial Ho. 2226282.

To (all whom it may concern.-

Be it known that I, Enwm HARTZELL, citizen of the United States, residing at Wilkes-Barre, in the county of Luzerne and State of Pennsylvania, have invented new and useful Improvement in Sifters, Separat tors, and Graders, of which the following is a specification.

This invention relates to a devicefor sifting, separating, and grading grains, coflee, spices, and similar light articles of merchandise.

The object of the invention is a device which will perform the above-mentioned functions with one running of the material through the device and without a multiplicit of shakers or complicated gearing.

The invention consists in the novel ar-' rangement of the sieves and boxes, the novel manner of rocking the boxes from a common rock-shaft, and in subjecting the graded and sifted material. to the action of a suction-fan adjacent the point of discharge for the purpose of removing such parts as chaff, hulls, and the like.

The invention further consists in the novel features of construction hereinafter described, pointed out in the claims, and shown in the accompanying drawings, i which- Figure i is a perspective view of the machine. Fig. 2 is a vertical longitudinal sec iron, Fig. 3 is a section on the line 3 3 of Fig: Fig. 4 1s a view looking toward the discharge end of the device. Fig. 5 is a detail sectional View taken on the line 5 .5 of Fig. 2. Fig. 6 is a detail perspective view showing an end of a rocker-arm and one face of the connecting-plate.

In constructing my device I employ a vergently-arranged boxes B and C- in vertical alinement. These boxes are suspended by hanger-rods D. pivotally connected to cross members of the frame A at their upper ends and to the sides of the boxes at their lower ends, whereby the boxes are free to swing longitudinally. The box B carries a screen placed a short distance above the bottom of the box, the said bottom heing preferably of galvanized iron, and at its lower end the box B is provided with an outlet or discharge slot B The slot B is above the lower end of the screen B, and in the bottom of the box, adjacent its lower end, is an opening B Downwarrflly-extcnding dischargeehutes are arranged. h low the lower end of the box B, one

of which, G, receives the material discharged through the opening B and convcvs it to the exterior of the frame, discharging it to one side. The other chute H receives the material discharged from the slot B and conveys it to the upper end of the hex C. Inthe box C are placed two screens J and J, the screen J being the coarser and both being of coarser mesh than the screen B",Whi.ch is the finestmesh screen employed. I prefer to con struct these screens cl sheet metal with apertures punched therein.

Between the divergent ends or the boxes B and C, I place a fan-casing l], opening to the.

rear-of the frame ii, and in which I place a fan E, mounted on a shaft which at one end carries a pulle3 E. Ahovr': the upper end of the hex B, i place a l ceddiopper F, which contains a valve i to which is connected a lever F or scale-imam, on which is placed. an adjustable weight i The weight and valve regulate the feed oi material to the box B and insure an even [low of the '1 material,

the amount to be .t'ed heino; 'rrguhztod by adjusting the weight along the lover iwo Wind-trunks}: 1 nd Ki lead to the fancasing, the trunks joining above the lower end of the he C. A valve ii is pi: ed at the juncture of the two trunks and can be shifted so that both trunks can he used or can he partially rotated to close either of them. The trunk K has a lower detached section K which is carried by the shaking screen C, shown Fig. 2. A dci ecton plate L is placed in the lower end of the trunk K adjacent the lower end of the hex C. Discharge-chutes M lea d from the box 0 above the screen J to the exterior of the frame, one chu te M discharging on oneside of the device and the other upon the opposite side, The box Cisprovided with openings C and C, corresponding, respectively, to the openings B and B, the opening 0 giving communication to the trunk K, which in turn opensdownwardly into a'receptacle U. The opening 6 opens downwardly into a receptacle O".

To operate the device, a shaft Pis journaled in the frame on which is'fixed an eccentric P, and to the eccentric-strap is secured a rod P, which is pivoted to a rocker-arm R, carried by a rock-shaft R. The rock-shaft R carries adjacent its ends upwardly and downs ICC wardly extending arms S. The upper and lower ends of the arms-S slightly offset and are slotted, shown in Fig 6. Plates S are connected to the sides of the boxes and carry'pins S adapted to engage the slots of the arms. The upper ends of the arms connect with the plates S, carried by the box B, and the lower ends of the arms with the plates S, secured on the sides of the box U. A pulley P is carried by one end of the shaft P, and a belt runs over the pulley P and the pulley E. On the opposite end of the shaft P is secured a drive-pulley P.

/ In operation the finest of the material passes through the screen B and is discharged to one side of the device through the chute G. The remainder of the material passes down the chute H into the box C, and the coarsest ol' the material fails to pass through the screen J and is delivered to the side of the machine through the chutes M. A portion of the material will pass through thescreen J, but not through the screen l, and this material will be delivered to the box 0 and will also be subject to the suction of the air-current in the trunks K and K, and any light articles such as hulls, cha d, &c. will be drawn upwardly andv discharged to the rear of the fan-casing F, the remainder passing into the box 0. The finest material, which passes into the chute H, will pass through both screens J and J and will be discharged. into the box 0. Both boxes B and C will be rocked by the arms S, the boxes rocking in opposite directions without undue vibrations of the frame A. The various screens are removable, either for purposes of cleaning or for varying the size of mesh tobe' employed. In order that the draft may be regulated for work with various materials, I provide a supplemental draft-opening E provided with a slide E so that the amount of air supplied to the .faircasing E can beregulated to suit the requirements, and it is also obvious that both or either one of the,

wind-trunks can be used by adjusting the valve K, the valve being set by the lever K3. (Shown in Fig. 1.)

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-- l. A device of the kind described comprising downwardly and oppositely inclined boxes, a sieve in the upper box, a double sieve in the lower box, the said sieves in the lower box being arranged one above tne other and the upper one terminating at its ceases lower end short of the'lower one, a discharge chute between the two boxes, common means for rocking both boxes, a receptacle adapted to receive material passing through. the lower-sieve of the lower box, a receptacle receiving material from the said lower sieve, a fan-casing, a fan therein, a wind-trunk leading to saidfan-casing and communicati no at its lower end with the lower box adjacent the end of the upper sieve, and a second wind-trunk leading to the fan-casing and coinnnlnicatin at its lower end with the last-mentionc receptacle.

2. A device of'the kind described comprising upper and lower oppositely inclined boxes, means for oppositely rocking the boxes, a sieve in the upper box, a plurality'ol sieves in the lower box, discharge-chutes alining with the lower end of the upper box, one of said chutes discharging into the upper end of the lower box, the said lower box having openings at its lower end respectively above and below the bottom sieve, receptacles alining with said openin dischargechutes leading from the lower ox adjacent its lower end from a point above the top sieve, wind-trunks extendin upwardly respectively from the lower end portion of the lower box and from adjacent the said end, and means for creating an upward current of air through the said trunks.

3. A device of the kind described comprising suspended boxes in vertical alinement, a discharge-chute between the boxes, sieves arranged longitudinally in the lower box and one above the other, said sieves being of different mesh, discharge-chutes arranged at the lower end of the said box adapted to convey material from the box from a point above the top sieve, the said box having an opening at the end adapted to discharge material from between the sieves, and an opening in the bottom, receptacles alining with said openings, a windtrunk having valve controlled branches one branch opening down-- wardly into the lower end of the said box above the top screen and the other branch havin commni'iication with the opening in the end of the box, a deflector plate adjacent said end openin and means for creating and maintaining a current of air upwardly through said trunks.

EDWIN HARTZELL.

Witnesses:

CHAS. i1. Jonas, JOHN P. Bnnmno; 

